[Communication interface]：UART serial port
[Carrier frequency]：220.125～236.125MHz
[Transmission power]：37dBm
[Communication distance]：25km
[Introduction]：E22-230T37S is a new generation of LoRa wireless module. It is a wireless serial module (UART) based on SX1262 radio frequency chip. It has multiple transmission methods, works in the 230MHz frequency band, TTL level output, and supports 4.5V-15V power supply voltage. The LoRa module adopts a new generation of LoRa spread spectrum technology. Compared with the traditional SX1278 solution, the SX126X is farther, faster, lower power consumption, and smaller; it supports air wake-up, wireless configuration, carrier monitoring, automatic relay, and communication encryption. Key and other functions, support subpackage length setting, and provide customized development services.
| Main parameters | Performance | Remarks | |||
| Minimum | Typical | Maximum | |||
| Working voltage (v） | 4.5 | 5~12 V | 15 | ≥4.5V can guarantee the output power, the lower the voltage, the greater the supply current | |
| Communication level (V) | - | 3.3 | - | There may be a risk of burning when using a 5V level, and a level conversion circuit is required | |
| Working temperature (℃) | -40 | - | 85 | industrial design | |
| Working frequency band (MHz) | 220.125 | - | 236.125 | Support ISM frequency band | |
| power consumption | 5V emission current (mA) | 2900 | 3100 | 3300 | Tested under 50 ohm impedance, impedance mismatch may lead to excessive current, please provide at least 3.5A output power supply when using 5V power supply |
| 12V emission current (mA) | 900 | 1100 | 1300 | Tested under 50 ohm impedance, the impedance mismatch may cause the current to be too large, please provide a power supply with at least 1.5A output when using 12V power supply | |
| Receive current (mA) | 38 | 43 | 48 | - | |
| Sleep current (uA) | - | 2 | - | software shutdown | |
| Maximum transmit power (dBm) | 36 | 37 | 38 | - | |
| Blocking power (dBm) | - | - | 10 | High-power radio frequency do not communicate at close range | |
| Receiving sensitivity (dm) | -126 | -128 | -130 | Air rate 2.4 kbps | |
| Air rate (bps) | 0.3k | 2.4k | 62.5k | User Programmable Control | |
| Reference distance | 25km | Sunny and open, urban area of Chengdu, antenna gain 5dBi, antenna height 2.5 meters, airspeed 2.4K. | |||
| launch length | 240 Byte | Subpackage 32/64/128/240 bytes can be sent by command setting | |||
| cache capacity | 1000 Byte | - | |||
| Modulation | LoRa | A new generation of LoRa modulation technology | |||
| Communication Interface | UART serial port | TTL level | |||
| Encapsulation | patch | SMD | |||
| Interface | 2.54mm | - | |||
| Dimensions | 50*30.9mm | - | |||
| RF interface | IPEX/stamp hole | The characteristic impedance is about 50 ohms | |||